履带式推土机底盘件的常见磨损

Common wear and tear of crawler dozer undercarriage parts

Crawler dozer undercarriage parts walking mechanism bearing all the weight of bulldozer, shoulder the driving function of bulldozer. The main form of damage is wear, this damage form is concentrated in the following contact parts: sprocket segement teeth and caterpillar pin sleeve surface, front idler and caterpillar chain rail joint raceway surface, carrier roller and caterpillar chain rail joint raceway surface, sprocket and caterpillar D6R track chain rail joint raceway surface, caterpillar pin and pin sleeve contact surface; Track plate and ground, ETC.

履带板
In the walking mechanism of dry track (relative to lubricated track and sealed track), the track is not lubricated, resulting in wear between the track pin and the pin sleeve due to relative motion in the process of work. Caterpillar E330 E336 6Y2756 Track Shoe is inevitable and normal to wear the pin and the pin sleeve in the track, but this wear can stretch the pitch of the track and make the track too large. This wear situation continues, the track will produce side movement, which causes the front idler, 托辊, 链轮, track roller and other parts wear, but also aggravate the wear of the track pin and sleeve. The wear of track is also manifested in the reduction of the height of track spine due to the contact between track plate and the ground, and the reduction of the height of track chain rail caused by the contact between track track surface and the front idler, 托辊, 滚轮. Serious wear of track plate will cause the loss of traction force of dozer undercarriage parts.

Sprocket Segement for Bulldozer
The wear of driving wheel teeth often occurs at the root, 正面和背面, left and right sides and top of the teeth. Wear occurs on the front side of the gear when the bulldozer is moving forward and the gear teeth are lifting the track pin sleeve, whereas wear occurs on the back side of the gear when the bulldozer is moving backward. 当轨道太松时, resulting in track deflection, gear impact on the side of the chain rail joint will cause the driving wheel tooth side wear. Another wear form of driving wheel teeth is top wear. Top wear occurs when the track and the driving wheel teeth are stuffed with viscous material, and the meshing relationship between the driving wheel teeth and the track pin sleeve is changed. As the bulldozer moves forward, it scratches the apex of the back of the teeth on the drive side of the drive wheel and the side of the pin sleeve.

前托辊
The wear of the front idler is caused by contact with the raceway surface of the chain rail joint, while the wear of the raised width of the front idler body is caused by the side contact with the chain rail joint. The results are as follows: the width of the bump of the guide wheel body decreases, the diameter of the raceway surface of the front idler body decreases, and the diameter of the guide wheel body decreases.

托辊
The wear of the YC35 carrier roller is caused by contact with the raceway surface of the chain rail joint. It shows that the width of the carrier roller flange decreases, the outside diameter of the carrier roller raceway surface decreases, and the outside diameter of the carrier roller flange decreases.

Track Roller
The wear of the BD2G 支重轮 is the same as the wear of the carrier roller and the front idler, which is also caused by the contact with the raceway surface of the chain rail joint. Specifically, the diameter of the outer flange decreases, the diameter of the raceway surface decreases, the diameter of the bilateral inner flange decreases, the width of the bilateral inner flange decreases, and the width of the outer flange decreases.